GMV DC Inverter VRF
66
6.3 Precautions at the Beginning of Using Season
(1) Check whether all air inlet and air outlet of indoor unit and outdoor unit are not blocked.
(2) Check if the grounding is reliable.
(3) Check if the battery of the remote controller has been replaced.
(4) Check if the air filter is properly installed.
(5) When restart up the unit after it has been stop operation for a long time, turn on the air
conditioner's power switch 2 hours before starting the operation to preheat the outdoor
compressor crankcase.
(6) Check if the outdoor unit is installed firmly. If there is any abnormality, please contact Gree
service center.
6.4 Maintenance at the End of Using Season
(1) Cut off the main power of the air conditioning unit.
(2) Clean the filter and indoor and outdoor units' body.
(3) Remove dust and debris from indoor and outdoor units.
(4) If the outdoor unit is rusted, smear the oil paint to prevent it from expansion.
6.5 Parts Replacement
Accessories are available through the nearby GREE office or GREE dealer.
NOTE!
Do not mix dangerous gases such as oxygen and acetylene into the refrigeration circuit during air
tightness and leak test! To avoid danger, it is best to use nitrogen for such tests.
7 Troubleshooting
7.1 Common Malfunction and Troubleshooting
Check the following items before asking for repair.
Phenomenon Reason Measure
The unit doesn't run.
Without power supply Connect to power supply
Voltage is too low Check if the voltage is within rating range
Broken fuse or breaker trips off Replace fuse or connect breaker
Insufficient energy of remote controller Replace new battery
Remote controller is out of control
scope
Control scope is within 8m
Unit runs but stop
immediately
Air intake or outlet of indoor or outdoor
unit is blocked
Remove obstruction
Abnormal cooling or
heating
Air intake or outlet of indoor or outdoor
unit is blocked
Remove obstruction
Improper temperature setting
Adjust setting at wireless remote controller or
wired controller
Fan speed is set too low
Adjust setting at wireless remote controller or
wired controller
Wind direction is not correct
Adjust setting at wireless remote controller or
wired controller
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